Internal-combustion engine.



A L. RIK E R; INTERNAL COMBUSTION ENGINE.

APPLICATION. FILED MAY 29, I905.

Patented May 2,1916.

2 SHEETS-SHEET I Inventor: flgzdrewlflilser A L. BIKER. INTERNALCOMBUSTION ENGINE.

APPLICATION FILED MAY 29, 1905- m 3 3 e v P n wflw MIDREW' L. BIKER, FBBEDGEPO BI'I GONNEGTICUT, ASSIGNOR TO THE LCCOMOIBILE fifilffTEZQ-JQ'YAIVEERIGA, OF NEW YQBK, H. Y., A CORJPGRATION OF VEST VIRGINIA.

IN'iERNAL-GfiMBUSTIDN ENGINE.

To eZZ whom it may concern Be it lniownthat 1, ANDREW L. Bums, a

citizen of the United States, residing at see. 9e willhemoreparticularly pointed oiit in the appended claims.

lnthe drawin "s. -Fi 'ure 1 is a side ele vetion of an automobile engineembodying on form of my invention; Fig. 2 is nsecail view of the sametaken on the line in 1; Fig; 3 is side elevation of :1 portion of thecam shaft, the remainder rig broken away; Fig. 4 is a section on line-l--fe, in Fig. 3 and Fig. 5 is a de- 1 of the controlling lever.

in the drawings I have shown in Fig. I e four-cylinder automobileinternal coinnnstion engine. Eechcylinder is provided with anappropriate sparking or ignition timing device a, herein a. make andbreak rhing device, actuation of which is efcted by a verticallyi'eoiproceted cam rod which passes through the crankshaft sing C andcarries at its lower end. the cam roller c engaging with the ignitercum. 0? which is preferably formed integrally with andnpon the cam shaft3. T e letter extends lengthwise the engine frame and is t ed. froin,the main crankshaft as by (D oer is also provided Wijh en appriste'admission valve e (Fig. 2) and exsu valve ,f. The former is raisedand. Mei-ed for admission and cutoff .nf the ;,l at the propertinees bythe vertically "nesting valve rod g carrying the cam in is engaging witha com 2". elsoformed "on the can! shaft e:. The exhaust valve fctnntethby the valve rod y" (Fig-Blown f r/end cam Z on the exhenst camshaft Specification of Letters Eatent.

Application filed May 28, 1395. Serial Nev/262,758. I

exhaust and ignition, oc'cu specific embodiment thereof, While its'ringinclicatecl at one end. Efiilh I imenteeiiiaye, 191s.

on, .the letter, being arranged lengthwise. then engine on the oppositeside thereof from-the; coin shaft e but also vyithin the casing (11: Thecan; shaft 0 therefore has four ignition cams. and four admission, camsand the jcamwieon shaft "m has four exhaust cams, one fort eachcylinder, thesnme. being arranged so, that the several events,naniely,-edmission,

in each cylinders at the appropriate'tinies. i

Whereun internal combustion engine is onerated {it a variable speed asWhere used to propel an automobile it is necessaryito vary the "time ofignition relzitive to the; other events of the engine stroke to corief-702 spond with therequired variations in speed. r lllher'i an increasedspeed isrequinednthetime of ignition ordinarily mlvanced 't0... occurearlier in the engine stroke, whilegifi a slower speed sought the timeof ignition is retarded. In order to permit this regu'a lation of theignition simultaneously foi all the cylinders of the engine in a simplemd eiieetive Way and without veriation ofthe.

time of admission, I elongate the ignition; and admission cams givingthe effective face or edge n of each ignition cam a spiral form so tohave s. constantly advancing relation lengthwise the cam shaft and makethe) entire cai'n shaft slideble lengthwise imits hearings. Slidingmovement of the cam; shaft 6' is controlled by the yoke 0 ,which nmy hemoved by the lever p 'locatecl outs side the ca ing and ettachedto therod q, the letter in turn secured to therocking arm 1 ihe rm '2 issecured to the ver; ticel shafts, the latter having at its bottom thebeveled gear a, meshing with the gear n, the letter in turn beingattached to the cen trel red o within the steering post w, whioh formedpart of the steering apparatus of the automohile upon which the enginehere in described is supposed to be mounted The steering post we carriesat its heedthe steering wheel to, to" which is stetionarilyse- 109 curedthe'notched segment m. I The teeth of the segment are engaged by and actto hold in position the pin g secured to the spring lever s,-the latterbeing attached to the end of tie cei'itmi mil 0. Thus during the 5 *5vehicle the operator wheni need. and desiring to advance or ever retardthe ignition can withdraw the pin 3/ to any newpo'sition desired 1 alongthe segment, the movement of the lever resulting in the partial rotationof the central rod '1) and the consequent shifting of the cam shaft inits bearings. This results in an advancement or retardation of the timeof ignition according as the cam shaft is shifted to the right or theleft as viewed in Fig. 1, for the spiral edge not the cam will meet thecam roller at an earlier or later period in the rotation of the camshaft, according to the position lengthwise the cam at which the rollerengages the same.

Details of the cam shaft as I have here constructed it are shown moreparticularly in Figs. 3 and s. The ignition and admission cams havingelongated faces are formed preferably in a single piece with the camshaft 6. The effective edge a of each ignition cam is spirale d to givethe required timing change of the ignition on shifting of the shaftwhile the elements of the admission cam are parallel to the axis of thecam shaft in order to produceno timing-change in the admission when theshaft is shifted. By the construction described the ignition cam shaftand the admission cam shaft are consolidated into a single shaft andthis together with the cams and cam rollers as well as the exhaust camshaft are contained within the oil tight engine casing (l and maytherefore be run in the oil which it is customary to place within suchcasing.

lVhile I have herein shown one specific embodiment of my invention forpurpose of illustrating the same, it is to be understood that it is inno wise limited to the specific details or the particular applicationthereof herein disclosed, but that many modifications and wide departurefrom the details described may be permitted without departi g from thespirit thereof.

, member, and a bevel gear Claims:

l. The combination in an automobile of an internal combustion enginehaving an oil tight casing, an ignition cam shaft mounted forlongitudinal movement within said casing, a member engaging said camshaft and extending outside of said casing, a steering post, an operatinrod passing through said steering post and provided at its lower endwith a bevel gear, a shaft connected to said meshing with said firstmentioned bevel gear, whereby the turning of said steering post rodmoves said cam shaft and varies the ignition.

2. In an automobile, the combination of an internal combustion enginehaving fuel supply means, ignition means an oil tight casing having acam shaft mounted for longitudinal and rotative movement therein andprovided with ignition means intermediate said cams and said fuel andignition means for operating the same upon rotation of said shaft, andadmission cams of an actuator having engagement with said shaft andextending outside said casing, a steering post, and means connectedtherewithfor operating said actuator to slide said. cam shaft forvarying or controlling the timing of the ignition, but without affectingvariation in admission, said ignition cams having spiral. elements andsaid admission cams parallel elements for that purpose. 1

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

ANDREW L1. antes,

, timing of the Witnesses H U WM. S. Tptiln, J12, Rena hLfiYOUNG.

